No query results shown using pl/sql developer for first time

[reenurya]

I am experiencing the error where no query results are being displayed. I have reinstalled the product, changed the versión to 14 and reconfigured the DB access again, but the problem persists. I am attaching a screenshot with the error.

 

[Marco Kalter]

To obtain some more diagnostic information, can you modify the PL/SQL Developer shortcut and add the DebugSQL parameter? For example:

"C:\Program Files\PLSQL Developer 14\plsqldev.exe" DebugSQL

Reproduce the problem and send me the debug.txt file that is generated in the %APPDATA%\PLSQL Developer 16 directory (e.g. C:\Users\<User>\AppData\Roaming\PLSQL Developer 14).

 

[fabrice]

DUAL is a SYS table, with public grant, can you see and access it, to see if you have one row